摘要:
The invention provides a metal salt of a crosslinked cellulose derivative represented by the following formula (I), wherein the degree of substitution of the hydroxyl group of glucose unit of the crosslinked cellulose derivative by a functional group a is 1 or more. R—O—A (I) {In the formula (I), R represents a crosslinked cellulose residue and A represents a functional group a having cation-exchange ability.}
摘要:
The problem of the present invention is to provide a cosmetic composition, which has a moisturizing effect, and whose ability to inhibit hyaluronidase activity is high. According to the present invention, by using one or more substances selected from sulfated cellulose and a salt thereof in combination with polyhydric alcohol, the moisturizing effect of sulfated cellulose and the ability to inhibit hyaluronidase activity can be further improved, and thereby the above-described problem can be solved. In addition, the present invention can provide a cosmetic composition having excellent stability through inclusion of an electrolyte having pH buffering ability.
摘要:
The invention provides a body weight gain inhibitor, a fat amount gain inhibitor, a medicament for prevention and/or treatment of obesity, a food composition having inhibitory effect on body weight gain and a food composition having inhibitory effect on fat amount gain, each containing ε-polylysine or a salt thereof. In another aspect of the invention, the described compositions are useful for inhibiting body weight gain, inhibiting fat amount gain and preventing and/or treating obesity.
摘要:
Intermediate compounds, including 2-(t-butyldimethylsilyloxymethyl)-3,4-[(dimethylmethylene)dioxy]-5-hydroxy-tricyclo[5.2.1.02,6]dec-8-ene, which are useful for the synthesis of neplanocin A having strong antitumor activity. Improved processes for the preparation of neplanocin A, starting from optically active 2-hydroxymethyl-5-hydroxy-tricyclo[5.2.1.02,6]deca-3,8-diene and via a key step comprising a retro-Diels-Alder reaction of the above intermediate.
摘要:
Intermediate compounds, including 2-(t-butyldimethylsilyloxymethyl)-3,4-[(dimethylmethylene)dioxy]-5-hydroxy-tricyclo[5.2.1.02,6]dec-8-ene, which are useful for the synthesis of neplanocin A having strong antitumor activity. Improved processes for the preparation of neplanocin A, starting from optically active 2-hydroxymethyl-5-hydroxy-tricyclo[5.2.1.02,6]deca-3,8-diene and via a key step comprising a retro-Diels-Alder reaction of the above intermediate.
摘要:
Intermediate compounds, including 2-(t-butyldimethylsilyloxymethyl)-3,4-[(dimethylmethylene)dioxy]-5-hydroxy-tricyclo[5.2.1.02,6dec-8-ene, which are useful for the synthesis of neplanocin A having strong antitumor activity. Improved processes for the preparation of neplanocin A, starting from optically active 2-hydroxymethyl-5-hydroxy-tricyclo[5.2.1.02,6]deca-3,8-diene and via a key step comprising a retro-Diels-Alder reaction of the above intermediate.
摘要:
A semiconductor memory device comprises a bottom electrode of a capacitor connected to a source region of a semiconductor substrate through a contact plug formed in a portion of a through-hole. The remaining portion of the through-hole has a side-wall film, on which a portion of the bottom electrode film is disposed. The two-level structure of the through-hole improves the step coverage of the side-wall film and avoids over-etching of the silicon substrate.
摘要:
An indole derivative of the formula: ##STR1## wherein R.sub.1 is lower alkoxy, lower alkoxycarbonyl-lower alkoxy, carboxy-lower alkoxy, lower alkoxycarbonyl, phenyl-lower alkoxy, lower alkyl being optionally substituted by hydroxy, di-lower alkylaminosulfonyl, etc., R.sub.2 is hydrogen, halogen, lower alkoxy, lower alkoxycarbonyl-lower alkoxy, carboxy-lower alkoxy, etc., R.sub.3 is hydrogen or lower alkyl, R.sub.4 is halogen or trifluoromethyl, R.sub.5 is lower alkyl, or a salt thereof, these compounds being potent .beta..sub.3 -adrenergic receptor-stimulating agent with excellent adrenoceptor selectivity, and being useful in the prophylaxis or treatment of obesity or diabetes mellitus.
摘要:
A method for producing an optically active 3-hydroxy-hexanoic acid represented by formula (1) and the enantimer by asymmetrically hydrolyzing a racemic ester of 3-hydroxyhexanoic acid in the presence of a lipase derived from porcine pancreas. ##STR1##
摘要:
The present invention provides a method for producing optically active 3-substituted-2-norbornanones which are useful as starting materials for several kinds of physiologically active materials, and to their intermediates, optically active 2-hydroxy-2-norbornanecarboxylic acid and to a method for producing these intermediates.